$\pi B_8{B}_8$ and $\sigma B_8{B}_8$ couplings from a chiral quark potential model

M. T. Fernandez-Carames, P. Gonzalez, A. Valcarce

From an SU(2)$\otimes$SU(2) chiral quark potential model incorporating spontaneous chiral symmetry breaking the asymptotic $\pi$ and $\sigma$ exchange pieces of the $NN$ potential are ge…